Thread tap M24 DIN-376B - HSS-E spiral point machine tap for through holes, metric coarse thread, 6H tolerance

In a busy metalworking shop, a machinist sets up a CNC lathe to produce a batch of steel flanges with M24 threaded through holes. The right tool for the job is this M24 DIN-376B machine tap, engineered for efficient chip evacuation and reliable thread cutting in a single pass. Its spiral point geometry pushes chips forward, making it ideal for through-hole threading in a wide range of materials, from general-purpose steel to stainless steel and non-ferrous metals.

Key specifications

• Thread type: Metric coarse thread (ISO 60° profile)
• Nominal diameter: M24
• Thread pitch: 3.0 mm
• Standard: DIN 376
• Tolerance class: 6H
• Material: High-speed steel with cobalt (HSS-E)
• Flute type: Spiral point (Form C/D)
• Application: For through holes
• Cutting direction: Right-hand cut
• Overall length: 125 mm
• Thread length: 38 mm
• Shank diameter: 18.0 mm
• Square drive size: 14.5 mm
• Number of flutes: 4
• Surface treatment: Bright (uncoated)
• Recommended materials: General purpose steel, stainless steel, cast iron, non-ferrous metals
• Max tensile strength: Up to 900 N/mm²

Why choose it

The cobalt-enriched HSS-E substrate provides excellent heat resistance and wear resistance, extending tool life even in demanding applications. The spiral point design ensures smooth chip flow ahead of the tap, reducing torque and the risk of chip clogging. With a 6H tolerance class, this tap produces threads that meet common ISO standards for medium fit, ensuring interchangeability with standard fasteners.

Ideal use cases

• CNC machining centers and lathes for through-hole threading
• Production of flanges, plates, and structural components
• Maintenance and repair workshops for rethreading or chasing threads
• General engineering applications in steel, stainless steel, and cast iron

Good to know

For optimal performance, use a suitable cutting fluid or tapping compound. The tap is designed for through holes only; for blind holes, consider a spiral flute tap. Store in a dry environment to prevent corrosion. Always follow recommended cutting speeds and feeds based on the workpiece material.